dc.contributor.author |
Perera, WDS |
|
dc.contributor.author |
Epa NBM |
|
dc.contributor.author |
Neligama, DA |
|
dc.contributor.author |
Hemalal, PVA |
|
dc.contributor.author |
Dharmaratne, PGR |
|
dc.contributor.editor |
Abeysinghe, AMKB |
|
dc.contributor.editor |
Dassanayake, ABN |
|
dc.contributor.editor |
Elakneswaran, Y. |
|
dc.date.accessioned |
2017-10-30T19:52:19Z |
|
dc.date.available |
2017-10-30T19:52:19Z |
|
dc.identifier.citation |
Perera, W.D.S., Epa N.B.M., Neligama, D.A., Hemalal, P.V.A., & Dharmaratne, P.G.R. (2017). Optimizing the specific charge for limestone blasting at Aruwakkalu Limestone Quarry. In A.M.K.B. Abeysinghe, A.B.N. Dassanayake & Y. Elakneswaran (Eds.), Proceedings of International Symposium on Earth Resources Management & Environment 2017 (pp. 33-42). Department of Earth Resources Engineering, University of Moratuwa. |
|
dc.identifier.uri |
http://dl.lib.mrt.ac.lk/handle/123/12835 |
|
dc.description.abstract |
The objective of this research is aimed at optimizing the specific charge for limestone blasting at Aruwakkalu limestone quarry without leading to poor
fragmentation of the blasted material. Thus, in reducing costs incurred during drilling and blasting activities, specific charge plays a vital role in open pit blast design as it affects many operational costs in mining activities. Therefore, at the
quarry, specific charge is calculated for each blast and is monitored and maintained. Blasting parameters such as spacing and burden are already optimized at quarry according to the empirical formulae published by Langefors and Kihlstrom (1976).Therefore, when optimizing specific charge, it was first decided to change blasting parameters having the greatest effect on fragmentation such as spacing,
burden, and charging method and evaluate the fragmentation of the blasted material because it is often difficult to optimize several blasting parameters
simultaneously. Since fragment size directly affects crushing, a computer aided model called ‘Split Desktop’ was used to analyse fragmentation of material using
digital photographs. Results of the four test blasts were analysed on cost basis. Thus, the blast geometry which resulted the lowest cost and the fragmentation within a manageable level is recommended to be practiced at the quarry in future. |
en_US |
dc.language.iso |
en |
en_US |
dc.subject |
Decking Charging Method |
en_US |
dc.subject |
Explosives |
|
dc.subject |
Fragmentation |
|
dc.subject |
Split Desktop |
|
dc.title |
Optimizing the specific charge for limestone blasting at Aruwakkalu Limestone Quarry |
en_US |
dc.type |
Conference Full-text |
en_US |
dc.identifier.faculty |
Engineering |
en_US |
dc.identifier.department |
Department of Earth Resources Engineering |
en_US |
dc.identifier.year |
2017 |
en_US |
dc.identifier.conference |
International Symposium on Earth Resources Management & Environment 2017 |
en_US |
dc.identifier.place |
Wadduwa |
en_US |
dc.identifier.pgnos |
pp. 33-42 |
en_US |
dc.identifier.proceeding |
Proceedings of International Symposium on Earth Resources Management & Environment 2017 |
|
dc.identifier.email |
hpanagoda54@gmail.com |
en_US |